Disable training the backout model in the integration test (#5021)

Author: suhaibmujahid

scripts/integration_test.sh

@@ -41,7 +41,9 @@ ls -lh data
 bugbug-train defectenhancementtask --limit 500 --no-download
 
 # Then train a commit model
-bugbug-train backout --limit 30000 --no-download
+# FIXME: Disabled temporary due to a problem in identifying backout comments
+# See: https://github.com/mozilla/bugbug/issues/5020#issuecomment-2884394426
+# bugbug-train backout --limit 30000 --no-download
 
 # Then spin the http service up
 # This part duplicates the http service Dockerfiles because we cannot easily spin Docker containers